[in.sur.ance] n (1651) 1 a: the business of insuring persons or property b: coverage by contract whereby one party undertakes to indemnify or guarantee another against loss by a specified contingency or peril c: the sum for which something is insured
2: a means of guaranteeing protection or safety "the contract is your ~ against price changes"
[2]insurance adj (1954): being a score that adds to a team's lead and makes it impossible for the opposing team to tie the game with its next score "~ run"